CVE-2020-27051 Integer overflow in Android

What is CVE-2020-27051?

CVE-2020-27051 is a high-severity vulnerability in Google Android, published on 15 Dec 2020. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

In NFA_RwI93WriteMultipleBlocks of nfa_rw_api.cc, there is a possible out of bounds write due to an integer overflow. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is needed for exploitation.Product: AndroidVersions: Android-11Android ID: A-157650338

Weakness: CWE-787, CWE-190

Which versions are affected by CVE-2020-27051?

It affects 1 product.

Products include Google Android.

How do I fix CVE-2020-27051?

No fix has been published for CVE-2020-27051 yet. Limit exposure of the affected software until one is available.

Is CVE-2020-27051 being exploited?

There is no known exploitation of CVE-2020-27051 in the wild and no public exploit code.

Other vulnerabilities in Google Android

• CVE-2026-58704 Google Pixel Improper Authorization Exploited High 8.8
• CVE-2025-48543 Android Runtime Use-After-Free Exploited High 8.8
• CVE-2023-35674 Android Framework Privilege Escalation Exploited High 8.8
• CVE-2025-48595 Android Framework Integer Overflow Exploited High 8.4
• CVE-2024-32896 Android Pixel Privilege Escalation Exploited High 8.1

All Google Android vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-5h57-vhr8-8f95.